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goblinko [34]
3 years ago
7

Explain why the model of this chemical reaction obeys the Law of Conservation of Matter.

Physics
2 answers:
OverLord2011 [107]3 years ago
7 0

Answer: Yes

Explanation: The law of conservation of mass explains that the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

Ghella [55]3 years ago
3 0

Answer:

because there are the same number of atoms of each element shown on both sides

Explanation:

i did the usa test prep

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At a certain location, wind is blowing steadily at 10 m/s. Determine the mechanical energy of air per unit mass and the power ge
Effectus [21]

Answer:

X=3976.078202kW \approx 3976kW

Explanation:

From the question we are told that

Wind speedV_w=10m/s

Turbine blade diameter D=90m

Air density  \tau=1.25kg/m^3

Mechanical energy K.E =0.05kJ/kg

Generally the power generation potential of the wind turbine X is mathematically given as

  X=m'*K.E

Where

m'=\tau *\pi*D^2/4*V

m'=1.25 *\pi*90^2/4*10

m'=79521.56404kg/s \approx 79521.5kg/s

Therefore

X=m'*K.E

X=79521.56404*0.05

X=3976.078202kW \approx 3976kW

X=4.0MW

4 0
3 years ago
On a trip to the Colorado Rockies, you notice that when the freeway goes steeply down a hill, there are emergency exits every fe
Zanzabum

Answer:

The maximum speed that the truck can have and still be stopped by the 100m road is the speed that it can go and be stopped at exactly 100m. Since there is no friction, this problem is similar to a projectile problem. You can think of the problem as being a ball tossed into the air except here you know the highest point and you are looking for the initial velocity needed to reach that point. Also, in this problem, because there is an incline, the value of the acceleration due to gravity is not simply g; it is the component of gravity acting parallel to the incline. Since we are working parallel to the plane, also keep in mind that the highest point is given in the problem as 100m. Solving for the initial velocity needed to have the truck stop after 100m, you should find that the maximum velocity the truck can have and be stopped by the road is 18.5 m/s.

Explanation:

4 0
3 years ago
The sports car has a mass of 1.5 Mg Mg and a center of mass at G. Determine the shortest time it takes for it to reach a speed o
mezya [45]

Answer:

\Delta t = 17.041\,s

Explanation:

The figure of the problem is included below as attachment. The equations of equilibrium are presented below:

\Sigma F_{x} = -\mu\cdot N_{1} = m\cdot a

\Sigma F_{y} = N_{1} + N_{2} - m\cdot g = 0

\Sigma M_{G} = N_{1}\cdot x_{1} - N_{2}\cdot x_{2} - \mu\cdot N_{1}\cdot y_{1} = 0

The system of equations are:

-0.2\cdot N_{1} = (1500\,kg)\cdot a

N_{1} + N_{2} - (1500\,kg)\cdot \left(9.807\,\frac{m}{s^{2}}\right) = 0

N_{1} \cdot [(0.75\,m)-0.2\cdot (0.35\,m)] - N_{2}\cdot (1.25\,m) = 0

The solution of the system is:

N_{1} = 9780.918\,N, N_{2} = 4929.582\,N and a = - 1.304\,\frac{m}{s^{2}}

The shortest time to reach a speed of 80 km/h is:

\Delta t = \frac{22.222\,\frac{m}{s}-0\,\frac{m}{s}}{1.304\,\frac{m}{s^{2}} }

\Delta t = 17.041\,s

7 0
4 years ago
A nearsighted eye has a far point of 100 cm. Objects further than 100 cm are not seen clearly. A diverging lens is used to permi
Leya [2.2K]

A diverging lens is used to permit clear vision of an object placed at infinity. The focal length of the lens is -100 cm.

<h3>What is focal length?</h3>

The focal length is half of the radius of curvature of the focal lens.

By the lens maker formula,

1/f = 1/v +1/u

where, v is the image distance and u is the object distance.

Give, the object is at infinity and the image must form at 100 cm, the the focal length will be

1/f = 1/ -100 + 1/∞

f = -100 cm

The focal length must be -100 cm for the diverging lens.

Learn more about focal length.

brainly.com/question/16188698

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6 0
3 years ago
Can someone please help meee!!
Paraphin [41]

The answer is 9800 J/S

5 0
3 years ago
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